javascript 兑现 Map 工具包

(function() {
    window['XR'] = {};
    var midContainer = new Array();
    var mapContainer = new Array();
    var MAPID = 0;
    function Map(mid) {
        var type = typeof (mid);
        if ((type != "string") && (type != "number")) {
            throw "Map id must be a string or number!";
        }
        for (var _c = 0; midContainer[_c]; _c++) {
            if (mid == midContainer[_c])
                throw "You have already created Map : " + mid;
        }
        var identify = MAPID++;
        midContainer[identify] = mid;
        mapContainer[identify] = {};
        mapContainer[identify]["id"] = mid;
        this.id = mid;
        this.prefix = "K_";
        this.toString = function() {
            return "This is a map object!";
        }
    }


    Map.prototype.getMapId = function() {
        return this.id;
    }
    Map.prototype.getMapIndex = function() {
        var index = -1;
        for (var _i = 0; mapContainer[_i]; _i++) {
            if (this.id == mapContainer[_i]["id"]) {
                index = _i;
            }
        }
        return index;
    }
    Map.prototype.put = function(key, value) {
        if ( typeof (key) != "string") {
            throw "key must be a string!";
        }
        if ( typeof (value) == "function") {
            throw "value shouldn't be a function!";
        }
        if (this.trimStr(key) == "") {
            throw "key is empty!";
        }
        var index = -1;
        index = this.getMapIndex();
        if (index != -1) {
            key = this.prefix + key;
            mapContainer[index][key] = value;
        }
    }
    Map.prototype.get = function(key) {
        var index = -1;
        index = this.getMapIndex();
        var value = "";
        if (index != -1) {
            var _tV = mapContainer[index];
            key = this.prefix + key;
            value = (_tV.hasOwnProperty(key)) ? _tV[key] : "You haven't save this key's value!";
        } else {
            value = "Current Map has lost connection!";
        }
        return value;
    }
    Map.prototype.deleteKey = function(key) {
        var index = -1;
        index = this.getMapIndex();
        key = this.prefix + key;
        var _tV = mapContainer[index];
        if (_tV.hasOwnProperty(key)) {
            delete _tV[key];
        }
    }

    Map.prototype.clearMap = function() {
        var index = -1;
        index = this.getMapIndex();
        var maxId = MAPID - 1;
        if (index <= maxId) {
            for (var t = index; t < maxId; t++) {
                mapContainer[t] = mapContainer[t + 1];
                midContainer[t] = midContainer[t + 1];
            }
            mapContainer[maxId] = null;
            midContainer[maxId] = null;
            this.id = null;
            this.toString = null;
            MAPID--;
        }
    }

    Map.prototype.trimStr = function(str) {
        return str.replace(/(^\s*)|(\s*$)/g, "");
    }
    Map.prototype.isEmpty = function() {
        var index = -1;
        index = this.getMapIndex();
        if (index != -1) {
            for (var attr in mapContainer[index]) {
                //alert(mapContainer[index][attr]);
                if (attr != "id") {
                    return false;
                }
            }
        }
        return true;
    }
    Map.prototype.showMap = function() {
        var index = -1;
        index = this.getMapIndex();
        var str = "";
        if (this.id != null) {
            str = "Map:\t" + this.id + "\n";
            for (var attr in mapContainer[index]) {
                if (attr != "id") {
                    str += attr + ":\t" + mapContainer[index][attr] + "\n";
                }
            }
        } else {
            str = "This Map doesn't exist!";
        }
        alert(str);
        return str;
    }
    window['XR']['Map'] = Map;
})()

//TEST CODES------------
function test() {
    with (XR) {
        var m1 = new Map("ddd");
        m1.put("dd", "dfdfdf");
        m1.put("dd2", "8yeah!");
        //alert(m1.get("dd"));
        //alert(m1.isEmpty());
        m1.deleteKey("dd");
        m1.clearMap();
        m1.showMap();
    }
}

test();

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